CVE-2025-21712
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
W jądrze systemu Linux zidentyfikowano podatność w funkcji bitmap_get_stats(), która może prowadzić do awarii systemu. Problem wynika z możliwości wywołania tej funkcji w momencie, gdy bitmapa została zniszczona lub nie została w pełni zainicjowana, co może spowodować błąd ochrony ogólnej.
Risk Assessment
Podatność ta może prowadzić do krytycznych awarii systemu, co zagraża stabilności i dostępności usług działających na serwerach z systemem Linux. Może to wpłynąć na ciągłość działania organizacji oraz bezpieczeństwo danych.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, która zawiera poprawkę dla tej podatności. Należy również monitorować systemy pod kątem nieautoryzowanych wywołań funkcji bitmap_get_stats().
Related vulnerabilities
- CVE-2026-94053Critical
Authentication bypass via LDAP injection in the sshd-ldap component of Apache MINA SSHD. Lack of escaping LDAP filter metacharacters enables successful authentication with username "*" and password "*".
- CVE-2026-94052Critical
A missing check in LdapPasswordAuthenticator in the sshd-ldap component of Apache MINA SSHD allows bypassing authentication checks. The vulnerability only affects servers using LdapPasswordAuthenticator for password authentication.
- CVE-2026-77185Critical
Authentication bypass in sshd-core of Apache MINA SSHD. A flaw in the implementation of the "asynchronous authentication" mechanism could potentially lead to skipping signature checks in public-key or hostbased authentication, or returning a wrong result.
- CVE-2026-102458Critical
Missing Authentication vulnerability in EasyFlow .NET by Digiwin. Unauthenticated remote attackers can obtain other users' plaintext passwords through a specific API.
- CVE-2026-102455Critical
Insecure Deserialization vulnerability in EasyFlow .NET by Digiwin. Unauthenticated remote attackers can execute arbitrary code on the server by sending maliciously crafted serialized content.
- CVE-2026-102508Critical
The OPC UA driver in Apache PLC4X (PLC4J) improperly verifies cryptographic signatures and server certificates. An attacker in a network position between client and server can impersonate the OPC UA server and read, forge, or modify secure-channel traffic, including user credentials sent by the client. The issue affects versions 0.9.0 through 0.13.1 and is fixed in version 1.0.0.
- CVE-2026-97196Critical
Improper Validation of Unsafe Equivalence in Input vulnerability in GiveWP by Liquid Web / StellarWP allows Authentication Bypass. The issue affects GiveWP from n/a through 4.16.9.
- CVE-2026-103110Critical
Pexip Infinity before 38.2, plus 39.0, 39.1 and 40.0, is affected by improper input validation that allows a remote attacker to execute code remotely as an unprivileged user on a Pexip Infinity Conferencing Node.
- CVE-2026-102911Critical
A flaw has been found in zosmaai pi-llm-wiki up to 0.11.7. Affected is an unknown function of the file mcp/index.ts of the component wiki_capture_source MCP tool. Executing a manipulation of the argument url can lead to OS command injection. The attack can be executed remotely. The exploit has been published and may be used.
- CVE-2026-103056Critical
AiSOC versions 7.2.0 before 12.0.0 contain a command injection vulnerability in the actions service that builds CrowdStrike Real Time Response command strings by interpolating unescaped action parameters in crowdstrike_rtr.py and endpoint.py. Authenticated users can inject single quotes into file_path, path, script_name, or script_args parameters to break out of quoted arguments and execute arbitrary commands on managed endpoints with SYSTEM or root privileges.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: md/md-bitmap: Synchronize bitmap_get_stats() with bitmap lifetime After commit ec6bb299c7c3 ("md/md-bitmap: add 'sync_size' into struct md_bitmap_stats"), following panic is reported: Oops: general protection fault, probably for non-canonical address RIP: 0010:bitmap_get_stats+0x2b/0xa0 Call Trace: <TASK> md_seq_show+0x2d2/0x5b0 seq_read_iter+0x2b9/0x470 seq_read+0x12f/0x180 proc_reg_read+0x57/0xb0 vfs_read+0xf6/0x380 ksys_read+0x6c/0xf0 do_syscall_64+0x82/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Root cause is that bitmap_get_stats() can be called at anytime if mddev is still there, even if bitmap is destroyed, or not fully initialized. Deferenceing bitmap in this case can crash the kernel. Meanwhile, the above commit start to deferencing bitmap->storage, make the problem easier to trigger. Fix the problem by protecting bitmap_get_stats() with bitmap_info.mutex.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

